Ubuntu Security Notice USN-3748-1

Ubuntu Security Notice 3748-1 - Sander Bos discovered that the MOTD update script incorrectly handled temporary files. A local attacker could use this issue to cause a denial of service, or possibly escalate privileges if kernel symlink restrictions were disabled.

Sander Bos discovered that the MOTD update script incorrectly handledtemporary files. A local attacker could use this issue to cause a denial ofservice, or possibly escalate privileges if kernel symlink restrictionswere disabled.

Update instructions:

The problem can be corrected by updating your system to the followingpackage versions:

Ubuntu 18.04 LTS: base-files 10.1ubuntu2.2

In general, a standard system update will make all the necessary changes.